Highlights:<br />  Bluetooth Version: V4.1 + EDR.<br />  Hi-Fi sound effect and wonderful music feeling.<br />  Built-in microphone supports digital signal processing echo cancellation technology.<br />  Intelligent voice navigation・ gives you full VIP-like experience.<br />  Professionally tunes for superior acoustics.<br />  Adjustable headband for your more suitable wearing.<br />  Listen and chat longer with a 20-hour rechargeable battery.<br />  Be comfortable with these light-weight・ adjustable headphones.<br />  Supports 3.5mm stereo audio input.<br />  Supported profiles: HFP・ A2DP・ AVRCP.<br /><br />Deascription:<br />Model : BQ - 618 <br />Color : Black・ White <br />Wearing type : Headband <br />Function : HiFi・ Voice control・ Answering phone・ Bluetooth・ Song switching・ Noise Cancelling・ Microphone <br />Connectivity : Wireless <br />Application : DJ・ Portable Media Player・ Mobile Phone・ Aviation・ Computer・ Sport <br />Plug Type: AUX-IN <br />Frequency response : 20~20KHz <br />Working voltage: DC5V / 500mA <br />Working time: 10 hours <br />Talk Time: 15 hours <br />Music Time: 20 hours <br />Charging time: 2.5 hours <br />Bluetooth: Yes <br />Bluetooth version: V4.1 + EDR <br />Bluetooth protocol: AVRCP・ HFP・ A2DP <br />Package weight: 0.227 kg <br />Product size (L x W x H) : 16.5 x 14.0 x 2.6 cm / 6.48 x 5.50 x 1.02 inches <br />Package size (L x W x H) : 19 x 16 x 5 cm / 7.47 x 6.29 x 1.97 inches <br />Package contents: <br />